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High intensity directional electroacoustic sound generating system for communications targeting

  • US 20050286346A1
  • Filed: 05/16/2005
  • Published: 12/29/2005
  • Est. Priority Date: 11/15/2002
  • Status: Abandoned Application
First Claim
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1. An electro-acoustic sound generator system for generating a high intensity directional sound column in a far field comprising:

  • an acoustic emitter with at least one transducer acoustic emission region;

    at least one power amplifier channel adapted to receive at least an audio signal;

    at least a length of the emitter being scaled to be at least four times a wavelength of a lowest frequency of at least one maximum acoustic output primary acoustic signal;

    at least a depth of the emitter being scaled to be less than one fourth the dimension of the length; and

    the emitter being configured and tuned to exhibit high efficiency over at least a narrow bandwidth corresponding to a frequency range of maximum sensitivity of a human auditory system, to generate a directed high intensity sound beam with an axial acoustic output of at least 140 dB at a minimum of 2 meters.

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